Crusher



Nov.20,1928.

' J. A. DORMER ET AL' rcnusngn m June 25, 1926 2 Sheets-Sheet 1 areas Nov. as, me.

' nears dE'TES- .PTENT @FEQE.

CRUSHER.

Application filed June 25,

This invention relates to a crushing ma chine that may be advantageously used for crushing and disintegrating rock, ore or other matter, and the invention has special reference to that type 'of machine having a 1 crushing passage or chamber through which the material must pass to be crushed. Ordinarily the matter isdeposited in a hopper at the upper end of the chamber or passage and discharged at the lower end thereof. Inthe crushing chamber is a crushing instrumentality, preferabl in'the form of a head that is oscillated, .wo bled or otherwise laterally shifted so as to produce a crushing pressure in various directions and by such movement cause the material to be agitated and fed through the chamber.

The primary object of this invention is to furnish the crushing passage or chamber oi the machine with one or more auxiliary crushing instrumentalities by which material may be re idlyrdisintegrated without any danger of the passage or chamber becoming clog ed. The auxiliary crushing instrumentalitles are adapted to be shifted relative to one another and relative to the walls of the chamber or passage loy the main crushing ,instrumentality, and the auxiliary crushing instrumentalities are also supported for adjustment within the passage or chamber so asto provide a desired degree of disintegration.

Another object of this invention is to furnish a crushing machine with folding or self adjusting crushing instrumentalities which permit of a larger additional discharge opening in a crushing chamber so that fine particles 'may. readily be dis charged without being trapped, and addi-- tional fine particles produced. The increased discharge area of the machine reduces the usual crushing stroke or pressure, saves power, and reduces'to a minimum oversize particles. 1 A further object of this invention is to furnish a"crush1ng machine with auxiliary crushing instrumentalities by which mate rial may he more accurately pulverized to a desired size, that is, the excess of. over or undersizematerial is reduced to a minimum. The auxlhary crushing instrumentalltles prevent the escape of oversize particles and afiord sufiicient clearance'for the escape of i uniform or desired size particles, so that this hearing is an eccentric or 1926. Serial N0.'118,421.

these uniform 01' desired size particles are not subjected to further crushing and fines that would be undersized.

The above and other objects are attainedby a crushing machine wherein the main crushing instrumentality may be supported in various ways and actuated in'various ways, therefore we do not care to confine our invention toany particular type of crushin machine other than set forth in the appende v claims.

Reference will now be had to the drawings, wherein Figure 1 is a verticalsectional view of one form of crushing machine;

- Fig. 2 is a horizontal sectional view of a portion of the same taken on the line IIII of Fig. 1, and l Fig,- 3 is a vertical sectional view of another form of crushing machine.

First, considering Figs. 1 and 2, there is a suitable foundation or support 1 on which the machine may be mounted for a bottomdischarge. Seated on this foundation is an hopper 4, said hopper and shells being connected to form a rigid and durabie structure by tie rods 5. Y

In the bottom shell 2 is a spider 6 supporting a bearing 7 and journaled centrally of hub 8 provided with a horizontally disposed beveled gear wheel 9 driven by a beveled gear wheel 10 on the power shaft 11. This power shaft is journaled in a bearing 12 carried by a gear housing or cover 13 attached to the bearing 7.- Suitable shims or wear plates 14 may be interposed between the gear housing 13 and theeccentricor hub 8. A The hopper 4 is formed with a spider 15 supporting a central bearing 16 provided with a liner 17 for the conical bushing 18 of an upper hub portion or spindle 19 carried by a conical crushing head 20 which consti tutes the main crushing instrumentality.

This crushing head has a depending apron or 1 flange 21 surrounding the upper portion of I the bearing 7 and a yieldable dust guard or shield 22 is supported on the bearing 7 to engage the apron 21. The crushing head 20 has a lower hubportion 23 extepdin into an opening 24 in the eccentric or hu ,8 and when the eccentricor hub 8 isrevolved a. wobi in providing a sinuous l5 bling, eccentric or gyratory lugs 34 carried movement is imparted to the crushing head 8 so that it lateralchine.

Suitablye mounted on the crushing head is an external liner presenting a plurality of conical superimposed crushing walls 26, 27 a-nd'28. The upper shell 3 of the machine is preferably made in two sections to facilitateassem bling and said shell provides stationary walls 29, and 31 complemental to the walls 26 to 28 inclusive. AllLof these walls cooperate from the hopper 4 to the bottom shell 2 and it is in this passage that the material is disintegrated or pulverized by) the crushing head 20 shifting the walls 26 to 28 inclusive toward and away from the stationary walls 29 to 31 inclusive.

. The lower section of thetop shell 3 is provided with recesses 32 for supporting the outer pivotal ends of a plurality of radially disposed arms 33 and theinner ends of said arms fulcrum or rest upon radially disposed hearings or protuberances 35 of'the arms33 is a single auxiliary crushing instrumentality 36 that may be in the form'of a ring self adjusaing in the passage between the walls '27 an 30.

This is an example of a single auxillai'y am e of a plurality of such instrumentalities is s own between the walls 28 and '31, where pivoted arms 37 support a plurality of con-' centric self adjusting rings 38 which are mov-' able relative to one another and movable rela-' .tive to the walls 28 and 31.

' terialto ,be delivered by the Provision has been made for bodily lifting all of the crushin 'instrumentalities and this is accomplished y raising or lowering the rushin head 20. ,Thegear housing 13 is rovid with a screw 39 having a bearing 'ead 40 within the eccentric or hub 8 engaging'the lower hub portion 23 of the crushinghead 20. By raising. or lowering the crushing head by adjusting screw 39 the legs 34 are raised or lowered and the arms 33 anda37 lifted'to raise or'lower the auxiliary crushing instrumentalities; It is by virtue of this bodily adjustment that the size of the ma.-

machine may be regulated and consequently the effective area ing of the crushing passage is varied by such adjustment. 1 a

Referencewill now be had to Fig. 3 show.- another form of crushing'machine. willbe remembered that the machine in Fig. 1

is drivenfrom the bottom thereof and the M verse is shown in Fig. 3. -Where the main crushing instrumentality has its bottom hub;

rtion 42 supported in a spider bearing .43 or a wobbling or pivotal movement therein, the upper hub portion 44 is eccentrically supported above the hopper 45 of the machi'neso ring that is slida may be employed for laterally shifting or. tortuous passage by the liner 25. Resting on elements.

crushing instrumentality and an ex- 'mentality20 without contributing supported between stationary and walls afiording a crushing passage,

p v 1 ally mdicated at 46.}- In this-particular ma-. v I ly shifts towards the top shell 3 of the ma-' chine we show a single auxiliary crushing-instrumentality '47,

' 1e and self adjusting in a crushing passage 48 and is supportedbya plurality of adjustable wedges 49 on pedestals 50' carried by the bearing spider 43f Screws 51 or any suitable adjusting meapls wedges 49 to raise or lower the auxiliary crushing instrumentality 47 and '-thus decrease or increase the-area of the passage 48. The adjustment bythe wedges 49 also compensates for wear in connection with the aux-v iliary crushin iag'i crushing w ls' tapering outwardly from the upper end of the instrumentality to the lower end-thereof and the'inner annular wall may be rovided with ribs 52 or other elements w ich will prevent complete closure ofthe' passage 48 between the main and auxiliary crushing instrumentalities; Obviously one or more of the auxiliary crushing instrumentalities 36.

instrumentality. The auxilinstrumentality 47 may have refiarably' in theform of a and38 may be provided-, with such ribs 'or Again considering Fig.1, it will be noted that the number and SIZG'Of the auxiliary crushing instrumentalities 38 and the: eccentricity or stroke of the 'main crushing instruthe' material chine. The upper walls 26 and 29 areadapt ed to crush large siz sand permit of smaller sizes descending between the walls 27 and"30. The smaller sizes may pass between said walls without being crushed and larger sizes-maybe determines the average size of delivered by the crushing mareduced by the singlecrushing instrumentality 36. The material eventually reaches the crushing instrumentalities 38, andthe passage between the walls 28'and 31 is restricted to such. an extent that no oversize material may escape without bein is sufiicient clearance for as to pass through to a crushing action of other material. In other words,the discharge end of the crushing passage'is of such area that theffines may escape andnot retard or contribute to the crushing material to be acted upon by the crushmg mstrumentalities 38.- In this manner there is a maximum uni .form size of material delivered by the crushing machine. Oversize isjreduced to a minimum and since there is an easy escape for fines the undersize is also'at a minimum, thus insuring a more'uniform output from the ma-. chine. I

' We might mention that in some forms of machines adjustable strumentalities may be in the form of jaws movable and any suitable means may beemployed for shifting the movable wall and eii'ecting a crushing O 130 crushed, yeti-there I auxiliary crushing 1 -126 eration. In some machines there may be a bodily lateral movement of the crushing head,

either by eccentrics at both ends of the head or by a long eccentric the full length of the head. so that the amplitude of stroke would be equal at the receiving and discharge ends of the machine. It is in this connection that the crushing head may be suitably supported from either or both ends and neither or both ends driven.

What we claim is 1. In a crushing chamber, a crushing head movable relative to walls of said chamber, and a crushing member adjustably supported in said crushing chamber and surrounding said crushing head and adapted to be actuated thereby.

2. A crushingmachine comprising a chamber, a main-crushing instrumentalityin said chamber, a plurality of auxiliary crushing instrumentalities in said chamber aetuated from said main crushing instrumentality, said auxiliary crushing instrumentalities being in superposed relation and adjustable relatively to one another.

3. A crushing machine comprising a stationary wall, a movable wall, a crushing instrumentality supported from both of said walls and adapted to be moved towards the openings.

5; A crushing machine as called for in claim 4, and means-adapted for shifting said crushing instrumentalities.

6. A crushing machine comprising a crushing passage, crushing means in the upper part of said passage and aplurality of crushing instrumentalities in the lower part of said passage, separate from said crushing means, and providing a plurality of discharge openings, the sum of the cross sectional areas of said openings being at least I equal to the open cross sectional area of the upper part of the passage containing and crushing means.

In testimony whereof we aflixour signatures.

JOHN A. DORMER. 

